| Number | Name | Date | Kind |
|---|---|---|---|
| DRE25316 | Stenger et al. | Jan 1963 | |
| D106061 | Reeves | Sep 1937 | |
| D171528 | Canter | Feb 1954 | |
| D194069 | Houghton | Nov 1962 | |
| D194631 | Eicholtz | Feb 1963 | |
| D197918 | Petitto | Apr 1964 | |
| D200655 | De Fano | Mar 1965 | |
| D209929 | Plummer | Jan 1968 | |
| D214973 | Amand | Aug 1969 | |
| D227654 | Byrne | Jul 1973 | |
| D233134 | Sinding | Oct 1974 | |
| D235310 | Betka | Jun 1975 | |
| D243121 | Ralston, Jr. et al. | Jan 1977 | |
| D244427 | Schieser et al. | May 1977 | |
| D244990 | Anderson | Jul 1977 | |
| D248440 | Bryan et al. | Jul 1970 | |
| D275734 | Voice | Oct 1984 | |
| D280709 | Waring | Sep 1985 | |
| D282957 | Carlson | Mar 1986 | |
| D284033 | Brodsky | May 1986 | |
| D288293 | Arvans | Feb 1987 | |
| D303496 | Larson | Sep 1989 | |
| D303497 | Larson | Sep 1989 | |
| 991417 | Boggs | May 1911 | |
| 2502298 | White | Mar 1950 | |
| 2635604 | Fredrickson | Apr 1953 | |
| 3195752 | Cox | Jul 1965 | |
| 3341047 | Nauta | Sep 1967 | |
| 3688950 | Parish | Sep 1972 | |
| 3717277 | Stengle, Jr. | Feb 1973 | |
| 3910461 | Eager | Oct 1975 | |
| 4362256 | Polasek | Dec 1982 | |
| 4391308 | Steiner | Jul 1983 | |
| 4629096 | Schroer et al. | Dec 1986 | |
| 4658975 | Cone | Apr 1987 | |
| 4805808 | Larson | Feb 1987 |
| Number | Date | Country |
|---|---|---|
| 1465560 | Dec 1966 | FRX |
| 110547 | Jan 1965 | NLX |
| Entry |
|---|
| Consumer Reports, Jan. 1987, pp. 42-48-"Water, Water Everywhere". |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 20648 | Mar 1987 |